Croatia, Italy, France—these European destinations have long been coveted insider knowledge for technical and wreck divers. But what about Spain? Technical diving is still in its infancy in Spain. Nevertheless, there are some dive centers in the Mediterranean, as well as on the Atlantic coast of Europe, which offer trimix. There are countless worthwhile destinations in Spain. Unknown wrecks may be found at depths between 60 and 120+m, but there are also many cave systems waiting to be explored and discovered. In this article, I take a closer look at the wrecks off the Atlantic coast of Spain, between Bilbao and Santander.